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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Courier New";color:#1F497D'>Hi Bernhard,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Courier New";color:#1F497D'>></span><span lang=EN-GB style='font-size:11.0pt;font-family:"Courier New";color:#993366'>after real frames are handled did you call avcodec_encode_video2 with NULL as frame as many times as got_packet returns true?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Courier New";color:#1F497D'>></span><span lang=EN-GB style='font-size:11.0pt;font-family:"Courier New";color:#993366'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Courier New";color:#1F497D'>></span><span lang=EN-GB style='font-size:11.0pt;font-family:"Courier New";color:#993366'>Depending on codec you have to "flush" encoder several times, until all frames have gone to output.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Courier New";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Success!! Thanks!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>But I do need one clarification: it just so happens that I have 36 frames, half return got_packet=0 and half return got_packet=1. So I called avcodec_encode_video2 18 times with a NULL frame. So here are my questions:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>1) You mention I call this function with a NULL frame as many times as got_packet returns true (=1). Shouldn’t it be the other way around? That is, I should only flush as many times as got_packet returns false (=0)?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>2) Is there a way to know exactly how many times I should call this function with a NULL frame? I can certainly count the number of got_packets={0 or 1}; but I’m wondering whether the ffmpeg api wouldn’t have that information itself in a way that would be more self-contained.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>3) Is it safe to call this function with a NULL packet several times – even more than necessary to flush everything?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>4) Finally, is it safe to call this function several times for other codecs – even if nothing needs to be flushed? In other words, would ffmpeg treat this call as a no-op if it’s not necessary?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Thanks again!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>-Arthur<o:p></o:p></span></p></div></body></html>